利用广域测量系统的振荡中心定位及其应用
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摘要
针对电势幅值不等、全系统阻抗不均时振荡中心的定位问题,文中提出一种利用广域测量系统的振荡中心定位新方法。当系统故障时,采用Ucosφ判据判别系统是否发生失步振荡,失步后利用广域测量系统获取电网全局动态实时信息,根据电势向量、母线电压向量及其差向量之间的夹角确定振荡中心位置,根据系统电压分布几何关系计算振荡中心电压。结合同调机群与功率不平衡度,给出了大区域互联电网的解列控制流程。实际算例表明,本文方法能够跟踪振荡中心的迁移,准确定位振荡中心,为后续解列控制奠定基础。
A new method of locating the oscillation center using the wide area measurement system is proposed in this paper,which aims at the problem of oscillation center positioning of the system whose amplitude of the potential is not equal and the whole system impedance is not uniform. When the system failure occurs,the Ucosφ criterion is exploited to judge whether the system begins to oscillate. The wide-area measurement system is used to obtain the global real-time information of the power grid,and the location of oscillation center is determined according to the angle among the potential vector,the bus voltage vector and their difference vector. Then,the voltage of oscillation center is calculated using the geometry of the system voltage distribution. Combined with the system coherent generators and power imbalance,the business process of splitting control is elaborated. The actual example shows that the method can track the migration of the oscillation center and provide the accurate position of the oscillation center,which lays foundation for the splitting control.
A new method of locating the oscillation center using the wide area measurement system is proposed in this paper,which aims at the problem of oscillation center positioning of the system whose amplitude of the potential is not equal and the whole system impedance is not uniform. When the system failure occurs,the Ucosφ criterion is exploited to judge whether the system begins to oscillate. The wide-area measurement system is used to obtain the global real-time information of the power grid,and the location of oscillation center is determined according to the angle among the potential vector,the bus voltage vector and their difference vector. Then,the voltage of oscillation center is calculated using the geometry of the system voltage distribution. Combined with the system coherent generators and power imbalance,the business process of splitting control is elaborated. The actual example shows that the method can track the migration of the oscillation center and provide the accurate position of the oscillation center,which lays foundation for the splitting control.
引文
[1]汤涌.基于响应的电力系统广域安全稳定控制[J].中国电机工程学报,2014,34(29):5041-5050.Tang Yong.Response-based Wide Area Control for Power System Security and Stability[J].Zhongguo Dianji Gongcheng Xuebao/proceedings of the Chinese Society of Electrical Engineering,2014,34(29):5041-5050.
[2]宋洪磊,吴俊勇,吴林峰.电力系统紧急情况下的动态分区和自主解列策略[J].电工技术学报,2012,27(1):224-230.Song Honglei,Wu Junyong,Wu Linfeng.Dynamic Partitioning and Active-Split Strategy in Power System Emergency Control[J].Transactions of China Electrotechnical Society,2012,27(1):224-230.
[3]苗伟威,贾宏杰,田圳.电力系统主动解列断面的快速搜索方法[J].电力系统自动化,2013,37(12):24-30.Miao Weiwei,Jia Hongjie,Tian Zhen.A Fast Partitioning Method for Power System Controlled Splitting[J].Dianli Xitong Zidonghua/automation of Electric Power Systems,2013,37(12):24-30.
[4]侯俊贤,韩民晓,汤涌,等.机电暂态仿真中振荡中心的识别方法及应用[J].中国电机工程学报,2013,(25):61-67.Hou Junxian,Han Minxiao,Tang Chung,et al.An Oscillation Center Identification Method and Application in Electro-mechanic Transient Simulation[J].Proceedings of the Csee,2013,(25):61-67.
[5]陈恩泽,唐飞,刘涤尘,等.振荡中心迁移下的电网失步解列策略[J].中国电机工程学报,2014,34(22):3799-3805.Chen Enze,Tang Fei,Liu Dichen,et al.Splitting strategy of power systems based on migration of oscillation center[J].Proceedings of the CSEE,2014,34(22):3799-3805.
[6]蔡国伟,孟祥霞,刘涛.电力系统振荡中心的暂态能量解析[J].电网技术,2005,29(8):30-34.Cai Guowei,Meng Xiangxia,Liu Tao.Study on transient energy around power system oscillation center[J].Power System Technology,2005,29(8):30-34.
[7]邓华,高鹏,王建全.关于振荡角的振荡中心电压和ucosφ的变化特征[J].电力系统及其自动化学报,2007,19(1):68-73.Deng Hua,Gao Peng,Wang Jianquan.Oscillation Center Voltage of Oscillation-angle and the Characteristics of ucosφ[J].Proceedings of the Chinese Society of Universities for Electric Power System&Automation,2007,19(1):68-73.
[8]胡永强,杨玉倩,赵书强,等.基于ucosφ和无功功率特征定位电网失步振荡中心的方法[J].华北电力大学学报(自然科学版),2013,40(5):36-41.Hu Yongqiang,Yang Yuqian,Zhao Shuqiang,et al.Method of positioning out-of-step oscillation center based on ucosφand reactive power characteristic[J].Journal of North China Electric Power University,2013,40(5):36-41.
[9]宗洪良,任祖怡,郑玉平,等.基于ucosφ的失步解列装置[J].电力系统自动化,2003,27(19):83-85.Zong Hongliang,Ren Zuyi,Zheng Yuping,et al.A out-of-step spliting device based on the changing track of the voltage of oscilation center[J].Automation of Electric Power Systems,2003,27(19):83-85.
[10]刘福锁,方勇杰,吴雪莲,等.基于相位角的失步解列判据在复杂场景下的适应性及对策[J].电力系统自动化,2015(16):71-75.Liu Fusuo,Fang Yongjie,Wu Xuelian,et al.Adaptability and countermeasures of splitting criterion based on phase angle in complex scenarios[J].Dianli Xitong Zidonghua/automation of Electric Power Systems,2015,39(16):71-75.
[11]刘福锁,方勇杰,吴雪莲,等.失步振荡下瞬时频率特性及振荡中心定位方法[J].中国电机工程学报,2016,36(4):986-992.Liu Fusuo,Fang Yongjie,Wu Xuelian,et al.Instantaneous Frequency Characteristics and Oscillation Center Location Method for Out of Step Oscillation[J].Zhongguo Dianji Gongcheng Xuebao/proceedings of the Chinese Society of Electrical Engineering,2016,36(4):986-992.
[12]唐飞,杨健,刘涤尘,等.基于电压频率特性的大区联网失步振荡中心研究[J].高电压技术,2015,41(3):754-761.Tang Fei,Yang Jian,Liu Dichen,et al.Study on the Oscillation Center of Interconnected Area Power Grids Based on Voltage Frequency Characteristic[J].Gaodianya Jishu/high Voltage Engineering,2015,41(3):754-761.
[13]王乙斐,吴佳军,云雷,等.基于无功功率捕捉振荡中心的方法研究[J].陕西电力,2013,41(5):21-26.Wang Yifei,Wu Jiajun,Yunlei,et al.A New Method to Capture the Oscillation Center Based on Reactive Power Integral[J].Shaanxi Electric Power,2013,41(5):21-26.
[14]胡杰,余贻鑫.基于本地量的振荡解列装置原理研究[J].中国电机工程学报,2001,21(12):67-72.Hu Jie,Yu Yixin.Study on principle of power system separation device based on local electrical parameter[J].Proceedings of the Csee,2001,21(12):67-72.
[15]赵晋泉,邓晖,徐光虎,等.基于区间联络线能量预测的暂态稳定紧急切机控制(一)机理与方法[J].电力自动化设备,2016,36(9):114-119.Zhao Jinquan,Deng Hui,Xu Guanghu,et al.Transient stability emergency generator tripping control based on tie-line energy prediction Part two:project case[J].Electric Power Automation Equipment,2016,36(9):114-119.
[16]张艳霞,蒙高鹏,赵冉,等.复杂场景下失步中心定位及振荡中心漂移规律[J].电网技术,2015,39(8):2264-2269.Zhang Yanxia,Meng Gaopeng,Zhao Ran,et al.Locating of out-ofstep centre and mechanism of oscillation centre migrating under complicated scenes[J].Power System Technology,2015,39(8):2264-2269.
[17]顾卓远,汤涌,张健,等.基于相对动能的电力系统暂态稳定实时紧急控制方案[J].中国电机工程学报,2014,34(7):1095-1102.Gu Zhuoyuan,Tang Chung,Zhang Jian,et al.Real-time Power System Transient Stability Emergency Control Scheme Based on the Relative Kinetic Energy[J].Proceedings of the Csee,2014,34(7):1095-1102.
[18]滕林,刘万顺,貟志皓,等.电力系统暂态稳定实时紧急控制的研究[J].中国电机工程学报,2003,23(1):64-69.Teng Lin,Liu Wanshun,Yun Zhihao,et al.Study of real-time power system transient stability emergency control[J].Proceedings of the Csee,2003,23(1):64-69.
[19]刘志雄,张艳霞,冯康恒,等.基于广域信息跟踪电力系统振荡中心的方法及应用[J].电网技术,2014,38(6):1694-1699.Liu Zhixiong,Zhang Yanxia,Feng Kangheng,et al.A wide area information based method of tracking power system's oscillation center and its application[J].Power System Technology,2014,38(6):1694-1699.
[20]刘福锁,方勇杰,李威,等.多频振荡下的失步振荡中心变化规律及其定位[J].电力系统自动化,2014,38(20):68-73.Liu Fusuo,Fang Yongjie,Li Wei,et al.Out-of-step oscillation center change rules and its location under multi-frequency oscillation[J].Automation of Electric Power Systems,2014,38(20):68-73.
[21]Kundur P.Power system stability and control[M].北京:中国电力出版社.2001:699-822.
[2]宋洪磊,吴俊勇,吴林峰.电力系统紧急情况下的动态分区和自主解列策略[J].电工技术学报,2012,27(1):224-230.Song Honglei,Wu Junyong,Wu Linfeng.Dynamic Partitioning and Active-Split Strategy in Power System Emergency Control[J].Transactions of China Electrotechnical Society,2012,27(1):224-230.
[3]苗伟威,贾宏杰,田圳.电力系统主动解列断面的快速搜索方法[J].电力系统自动化,2013,37(12):24-30.Miao Weiwei,Jia Hongjie,Tian Zhen.A Fast Partitioning Method for Power System Controlled Splitting[J].Dianli Xitong Zidonghua/automation of Electric Power Systems,2013,37(12):24-30.
[4]侯俊贤,韩民晓,汤涌,等.机电暂态仿真中振荡中心的识别方法及应用[J].中国电机工程学报,2013,(25):61-67.Hou Junxian,Han Minxiao,Tang Chung,et al.An Oscillation Center Identification Method and Application in Electro-mechanic Transient Simulation[J].Proceedings of the Csee,2013,(25):61-67.
[5]陈恩泽,唐飞,刘涤尘,等.振荡中心迁移下的电网失步解列策略[J].中国电机工程学报,2014,34(22):3799-3805.Chen Enze,Tang Fei,Liu Dichen,et al.Splitting strategy of power systems based on migration of oscillation center[J].Proceedings of the CSEE,2014,34(22):3799-3805.
[6]蔡国伟,孟祥霞,刘涛.电力系统振荡中心的暂态能量解析[J].电网技术,2005,29(8):30-34.Cai Guowei,Meng Xiangxia,Liu Tao.Study on transient energy around power system oscillation center[J].Power System Technology,2005,29(8):30-34.
[7]邓华,高鹏,王建全.关于振荡角的振荡中心电压和ucosφ的变化特征[J].电力系统及其自动化学报,2007,19(1):68-73.Deng Hua,Gao Peng,Wang Jianquan.Oscillation Center Voltage of Oscillation-angle and the Characteristics of ucosφ[J].Proceedings of the Chinese Society of Universities for Electric Power System&Automation,2007,19(1):68-73.
[8]胡永强,杨玉倩,赵书强,等.基于ucosφ和无功功率特征定位电网失步振荡中心的方法[J].华北电力大学学报(自然科学版),2013,40(5):36-41.Hu Yongqiang,Yang Yuqian,Zhao Shuqiang,et al.Method of positioning out-of-step oscillation center based on ucosφand reactive power characteristic[J].Journal of North China Electric Power University,2013,40(5):36-41.
[9]宗洪良,任祖怡,郑玉平,等.基于ucosφ的失步解列装置[J].电力系统自动化,2003,27(19):83-85.Zong Hongliang,Ren Zuyi,Zheng Yuping,et al.A out-of-step spliting device based on the changing track of the voltage of oscilation center[J].Automation of Electric Power Systems,2003,27(19):83-85.
[10]刘福锁,方勇杰,吴雪莲,等.基于相位角的失步解列判据在复杂场景下的适应性及对策[J].电力系统自动化,2015(16):71-75.Liu Fusuo,Fang Yongjie,Wu Xuelian,et al.Adaptability and countermeasures of splitting criterion based on phase angle in complex scenarios[J].Dianli Xitong Zidonghua/automation of Electric Power Systems,2015,39(16):71-75.
[11]刘福锁,方勇杰,吴雪莲,等.失步振荡下瞬时频率特性及振荡中心定位方法[J].中国电机工程学报,2016,36(4):986-992.Liu Fusuo,Fang Yongjie,Wu Xuelian,et al.Instantaneous Frequency Characteristics and Oscillation Center Location Method for Out of Step Oscillation[J].Zhongguo Dianji Gongcheng Xuebao/proceedings of the Chinese Society of Electrical Engineering,2016,36(4):986-992.
[12]唐飞,杨健,刘涤尘,等.基于电压频率特性的大区联网失步振荡中心研究[J].高电压技术,2015,41(3):754-761.Tang Fei,Yang Jian,Liu Dichen,et al.Study on the Oscillation Center of Interconnected Area Power Grids Based on Voltage Frequency Characteristic[J].Gaodianya Jishu/high Voltage Engineering,2015,41(3):754-761.
[13]王乙斐,吴佳军,云雷,等.基于无功功率捕捉振荡中心的方法研究[J].陕西电力,2013,41(5):21-26.Wang Yifei,Wu Jiajun,Yunlei,et al.A New Method to Capture the Oscillation Center Based on Reactive Power Integral[J].Shaanxi Electric Power,2013,41(5):21-26.
[14]胡杰,余贻鑫.基于本地量的振荡解列装置原理研究[J].中国电机工程学报,2001,21(12):67-72.Hu Jie,Yu Yixin.Study on principle of power system separation device based on local electrical parameter[J].Proceedings of the Csee,2001,21(12):67-72.
[15]赵晋泉,邓晖,徐光虎,等.基于区间联络线能量预测的暂态稳定紧急切机控制(一)机理与方法[J].电力自动化设备,2016,36(9):114-119.Zhao Jinquan,Deng Hui,Xu Guanghu,et al.Transient stability emergency generator tripping control based on tie-line energy prediction Part two:project case[J].Electric Power Automation Equipment,2016,36(9):114-119.
[16]张艳霞,蒙高鹏,赵冉,等.复杂场景下失步中心定位及振荡中心漂移规律[J].电网技术,2015,39(8):2264-2269.Zhang Yanxia,Meng Gaopeng,Zhao Ran,et al.Locating of out-ofstep centre and mechanism of oscillation centre migrating under complicated scenes[J].Power System Technology,2015,39(8):2264-2269.
[17]顾卓远,汤涌,张健,等.基于相对动能的电力系统暂态稳定实时紧急控制方案[J].中国电机工程学报,2014,34(7):1095-1102.Gu Zhuoyuan,Tang Chung,Zhang Jian,et al.Real-time Power System Transient Stability Emergency Control Scheme Based on the Relative Kinetic Energy[J].Proceedings of the Csee,2014,34(7):1095-1102.
[18]滕林,刘万顺,貟志皓,等.电力系统暂态稳定实时紧急控制的研究[J].中国电机工程学报,2003,23(1):64-69.Teng Lin,Liu Wanshun,Yun Zhihao,et al.Study of real-time power system transient stability emergency control[J].Proceedings of the Csee,2003,23(1):64-69.
[19]刘志雄,张艳霞,冯康恒,等.基于广域信息跟踪电力系统振荡中心的方法及应用[J].电网技术,2014,38(6):1694-1699.Liu Zhixiong,Zhang Yanxia,Feng Kangheng,et al.A wide area information based method of tracking power system's oscillation center and its application[J].Power System Technology,2014,38(6):1694-1699.
[20]刘福锁,方勇杰,李威,等.多频振荡下的失步振荡中心变化规律及其定位[J].电力系统自动化,2014,38(20):68-73.Liu Fusuo,Fang Yongjie,Li Wei,et al.Out-of-step oscillation center change rules and its location under multi-frequency oscillation[J].Automation of Electric Power Systems,2014,38(20):68-73.
[21]Kundur P.Power system stability and control[M].北京:中国电力出版社.2001:699-822.